Home
Class 12
PHYSICS
Given below are some famous numbers asso...

Given below are some famous numbers associated with electromagnetic radiations in different contexts in physics. State the part of the electromagnetic spectrum to which each belongs.
21 cm (wavelength emitted by atomic hydrogen in interstellar space).

Text Solution

Verified by Experts

Given radiation of 21 cm wavelength is in the section of ..Radio waves.. of electromagnetic spectrum towards higher frequency.
Promotional Banner

Topper's Solved these Questions

  • ELECTROMAGNETIC WAVES

    KUMAR PRAKASHAN|Exercise SECTION B NUMERICALS (Numerical From .DARPAN. Based On Textbook)|12 Videos

  • ELECTROMAGNETIC WAVES

    KUMAR PRAKASHAN|Exercise SECTION C NCERT EXEMPLAR SOLUTION (Multiple Choice Questions)|13 Videos

  • ELECTROMAGNETIC WAVES

    KUMAR PRAKASHAN|Exercise SECTION B NUMERICALS (Numerical From Textual Illustrations)|18 Videos

  • ELECTROMAGNETIC INDUCTION

    KUMAR PRAKASHAN|Exercise Section D MCQs (MCQs asked in Competitive Exams )|38 Videos

  • ELECTROSTATIC POTENTIAL AND CAPACITANCE

    KUMAR PRAKASHAN|Exercise Section D ( MCQs asked in Cometitive Exams )|39 Videos

Similar Questions

Explore conceptually related problems

Given below are some famous numbers associated with electromagnetic radiations in different contexts in physics. State the part of the electromagnetic spectrum to which each belongs. 5890 Å - 5896 Å [double lines of sodium]

Given below are some famous numbers associated with electromagnetic radiations in different contexts in physics. State the part of the electromagnetic spectrum to which each belongs. 2.7 K [temperature associated with the isotropic radiation filling all space - thought to be a relic of the 'big - bang' origin of the universe].

Given below are some famous numbers associated with electromagnetic radiations in different contexts in physics. State the part of the electromagnetic spectrum to which each belongs. 14.4 keV [energy of a particular transition in ""^(57)Fe nucleus associated with a famous high resolution spectroscopic method (Mossbauer spectroscopy)].

Given below are some famous numbers associated with electromagnetic radiations in different contexts in physics. State the part of the electromagnetic spectrum to which each belongs. 1057 MHz (frequency of radiation arising from two close energy levels in hydrogen , known as Lamb shift).

Use the formula lambda_(m)T=0.29 cm K to obtain the characteristic temperature ranges for different parts of the electromagnetic spectrum. What do the numbers that you obtain tell you ?

The terminology different parts of the electromagnetic spectrum is given in the text. Use the formula E = hv (for energy of a quantum of radiation : photon) and obtain the photon energy in units of eV different parts of the electromagnetic spectrum. In what way are the different scales of photon energies that you obtain related to the sources of electromagnetic radiation ?

Hydrogen atom in ground state is excited by a monochromatic radiation of wavelength lambda = 975 Å then number of spectral lines in resulting spectrum emitted will be ......

The vividh Bharati station of All india Radio Delhi . Broadcasts on a frequency of 1.368 kHz (kilo hertz) Calculate the wavelength of the elctromagnetic radiation emitted by transmitter .Which part of the electromagnetic spectrum does it belong to ?

KUMAR PRAKASHAN-ELECTROMAGNETIC WAVES-SECTION B NUMERICALS (Numerical From Textual Exercise)
  1. In a plane electromagnetic wave, the electric field oscillates sinusoi...

    Text Solution

    |

  2. Suppose that the electric field part of an electromagnetic wave in vac...

    Text Solution

    |

  3. Suppose that the electric field part of an electromagnetic wave in vac...

    Text Solution

    |

  4. Suppose that the electric field part of an electromagnetic wave in vac...

    Text Solution

    |

  5. Suppose that the electric field part of an electromagnetic wave in vac...

    Text Solution

    |

  6. Suppose that the electric field part of an electromagnetic wave in vac...

    Text Solution

    |

  7. About 5% of the power of a 100 W light bulb is converted to visible ra...

    Text Solution

    |

  8. About 5% of the power of a 100 W light bulb is converted to visible ra...

    Text Solution

    |

  9. Use the formula lambda(m)T=0.29 cm K to obtain the characteristic temp...

    Text Solution

    |

  10. Given below are some famous numbers associated with electromagnetic ra...

    Text Solution

    |

  11. Given below are some famous numbers associated with electromagnetic ra...

    Text Solution

    |

  12. Given below are some famous numbers associated with electromagnetic ra...

    Text Solution

    |

  13. Given below are some famous numbers associated with electromagnetic ra...

    Text Solution

    |

  14. Given below are some famous numbers associated with electromagnetic ra...

    Text Solution

    |

  15. Long distance radio broadcasts use short - wave bands. Why ?

    Text Solution

    |

  16. It is necessary to use satellites for ling distance TV transmission. W...

    Text Solution

    |

  17. Optical and radiotelescopes are built on the ground but X - ray astron...

    Text Solution

    |

  18. The small ozone layer on top of the stratosphere is crucial for human ...

    Text Solution

    |

  19. If the earth did not have an atmosphere, would its average surface tem...

    Text Solution

    |

  20. Some scientists have predicted that a global nuclear war on the earth ...

    Text Solution

    |